51233195520000 has 4160 divisors, whose sum is σ = 222167095772160. Its totient is φ = 11561730048000.

The previous prime is 51233195519971. The next prime is 51233195520019. The reversal of 51233195520000 is 2559133215.

51233195520000 is a `hidden beast` number, since 5 + 12 + 3 + 31 + 95 + 520 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (4160).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 764674559967 + ... + 764674560033.

Almost surely, 2^{51233195520000} is an apocalyptic number.

51233195520000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51233195520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111083547886080).

51233195520000 is an abundant number, since it is smaller than the sum of its proper divisors (170933900252160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51233195520000 is a wasteful number, since it uses less digits than its factorization.

51233195520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The spelling of 51233195520000 in words is "fifty-one trillion, two hundred thirty-three billion, one hundred ninety-five million, five hundred twenty thousand".